The mum then goes on to explain what happened when the owner of the dance school found out - revealing the other parent's plan backfired pretty quickly.

She said: "The dance school owner is an older lady and had no idea there were idiots these days that didn't vax so she implemented a new rule that students had to be up to date and the unvaxxed kid had to find a new dance school.

"I felt bad for the kid but her mother is a sociopath.

"Herd immunity saves lives when it comes to kids fighting cancer."

Other users on the post were equally horrified, with one writing: "This is the thing about antivaxers that really drives me nuts, I feel terrible for their kids getting put at risk, but it's even worse than that, they are putting at risk anyone who is immune compromised!